摘要
分析了喀斯特石漠化地区不同水土保持措施对土壤物理性质和抗剪性的影响,结果表明,不同措施下土壤平均持水性总体表现为水保林>封山育林>经济林>坡耕地>坡改梯,平均土壤容重表现为水保林<经济林<封山育林<坡耕地<坡改梯,平均土壤总孔隙度表现为水保林>经济林>封山育林>坡耕地>坡改梯,土壤平均抗剪强度大小排序为封山育林>水保林>坡改梯>坡耕地>经济林,总体表现为水保林增加土壤持水性、土壤孔隙度,降低土壤容重效果显著,封山育林状态下土壤抗剪性最强,坡改梯由于人为扰动增加了土壤容重。综合分析,水保林对土壤物理性质改良效果较好。
The effects of different water and soil conservation measures on soil physical properties and shear resistance in Karst rocky desertification areas were analyzed.The results showed that the overall performance of soil average water holding capacity under different measures was soil and water conservation forests>afforestation>economic forest>sloping farmland>slope-to-terrace;the average soil bulk density was represented by soil and water conservation forests<economic forests<afforestation<sloping farmland<slope-to-terrace;the overall performance for the average soil total porosity was soil and water conservation forests>economic forests>afforestation>sloping farmland>slope-to-terrace;the average shear strength of soil order as follows:afforestation>soil and water conservation forests>slope-to-terrace>sloping farmland>economic forests.The overall performance was that soil and water conservation forests increased soil water holding capacity and soil porosity,and reduced soil bulk density.The soil had the strongest shear resistance in the state of closed hills for afforestation.The slope-to-terrace increased the soil bulk density due to human disturbance.Comprehensive analysis showed that the soil and water conservation forest had good effect on soil physical properties improvement.
作者
岳坤前
顾再柯
袁茏
方启彬
YUE Kun-qian;GU Zai-ke;YUAN Long(Guizhou Monitoring Station of Soil and Water Conservation,Guiyang,Guizhou 550002;School of International Tourism and Culture,Guizhou Normal University,Guiyang,Guizhou 550001)
出处
《安徽农业科学》
CAS
2021年第5期80-82,共3页
Journal of Anhui Agricultural Sciences
基金
贵州省水利科技经费项目(KT201617,KT201508,KT201825)。
关键词
水土保持措施
土壤物理性质
抗剪性
影响
喀斯特石漠化地区
Soil and water conservation measures
Physical properties of soil
Shear resistance
Effect
Karst rocky desertification areas
